OLEACINA. 41 



columella obliquety plicate at the base. Described and figured 

 by Crosse and Fischer. 



0. AUDEBARDI, Deshayes. PL 9, fig. 27. 



Shell thin, hyaline, light orange-red, lightly plicate-striate, 

 crossed by thin spiral striae ; whorls 6^, suture crenately mar- 

 gined ; columella concave, twisted. Length, 62 mill. 



Central America. 

 O. MIRADORENSIS, Strebel. PI. 8, fig. 17. 



Shell translucent, shining, brownish flesh-color ; irregularly 

 longitudinally plicate, the plicae becoming sharper towards the 

 suture and obsolete towards the base, crossed by rather sharp 

 spiral striae ; suture crenulated, margined, subhyaline. 



Length, 46 mill. 



Mirador, Mexico. 



First figured by Strebel as a form of 0. Audebardi. 

 0. INDUSIACA, Pfeiffer. PL 9, fig. 21. 



Moderately solid, rugosely longitudinally striate, crossed by 

 close revolving striae ; 3 r ellowish brown, with here and there the 

 remnants of a chestnut-colored epidermis ; whorls 5J, suture 

 subcrenate ; last whorl subinflated, the spiral sculpture obsolete 

 below the middle ; columella subvertical ; aperture pearly within. 



Length, 43 mill. 



Oajaca, Mexico. 

 0. CARNEA, Pfeiffer. PL 7, fig. 93. 



Moderately solid, diaphanous, shining, decussated by striae 

 which become obsolete inferiorly ; orange-rose color; whorls 6, 

 suture closely, elegantly denticulated. Length, 27 mill. 



Central America, Mexico. 



This is 0. turris, Desh., and 0. Yucatanensis, Strebel. 



0. CYLINDRACEA, Phillips. PL 8, fig. 12. 



Moderately thick, pellucid, finely longitudinally striated, the 

 striae crossed by very minute lines ; very pale flesh-color ; whorls 



7, suture crenulated. Length, 29 mill. 



Yucatan. 



Only known by the outline figure, of which I give a copy ; it is 

 very probably identical with! the preceding species over which 

 it has priority of publication. 



